6
OPERATION
Using the FM Trap
If the TV picture contains wavy or her-
ringbone-patterned dark lines, slide
FM
TRAP
to
IN
to reduce or eliminate this
interference.
If you have the amplifier connected to
an FM receiver and a TV, set
FM TRAP
to
OUT
when you listen to the radio.
Note: If
FM TRAP
has no effect on the
picture, the interference might be from
a source other than FM. You might
need additional traps.
Using the Gain Control
If your TV receives too strong a signal,
the picture tears and becomes unsta-
ble, and FM sound can become dis-
torted. To prevent this, use a small
flathead screwdriver to rotate
GAIN
to
provide the maximum signal amplifica-
tion without overload.
• Rotate
GAIN
toward
MAX
for weak
or distant stations.
• Rotate
GAIN
toward
MIN
for strong
or nearby stations.
Automatic Protection Circuit
The amplifier contains circuitry to
guard against damage caused by a
short anywhere in the cable from the
amplifier to the receiving unit. A short
between the amplifier and the power
supply causes the power supply to
shut down automatically, turning off
the power indicator and amplifier. If
you suspect a short, follow these steps
to correct it.
1. Unplug the power cord and dis-
connect the coaxial cable you sus-
pect is shorted.
2. Wait 10 minutes for the power sup-
ply to reset. During this time,
repair or replace the cable.
3. With the cable disconnected, plug
in the power cord.
4. If the power indicator lights,
unplug the power supply, recon-
nect the cable, and plug in the
power cord again. The power indi-
cator should light again. If the
power indicator still does not light,
take the unit to your local Ra-
dioShack store for assistance.
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